判断下列句子是否符合短文内容。符合的写“T”，不符合的写“F”。 Dear Jack, How are you? I have been in the USA for six months. I like the life here. I have a few friends. I don't have much homework. There are a lot of sports at my school, but I don't like sports at all. like the food very much. I eat a lot of different kinds of food every day. I like coke (可乐) very much. I don't drink water. I drink coke instead (代替). I'm enjoying my life here. The sad thing is that sometimes I get ill. I don't know why. My parents say I must go on a diet (节食) and do more sports. Must I? Yours, David (     )1. David has been in America for six months. (     )2. David has to do much homework. (     )3. There are many sports at David's school. (     )4. David likes coke better than water. (     )5. David knows why he is often ill.